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Modify BufferGetPage() to prepare for "snapshot too old" feature

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This patch is a no-op patch which is intended to reduce the chances
of failures of omission once the functional part of the "snapshot
too old" patch goes in.  It adds parameters for snapshot, relation,
and an enum to specify whether the snapshot age check needs to be
done for the page at this point.  This initial patch passes NULL
for the first two new parameters and BGP_NO_SNAPSHOT_TEST for the
third.  The follow-on patch will change the places where the test
needs to be made.
This commit is contained in:
Kevin Grittner
2016-04-08 14:30:10 -05:00
parent 689f9a0588
commit 8b65cf4c5e
65 changed files with 735 additions and 522 deletions
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18
src/backend/access/gin/ginentrypage.c
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@@ -274,7 +274,8 @@ entryLocateEntry(GinBtree btree, GinBtreeStack *stack)
maxoff;
IndexTuple itup = NULL;
int result;
Page page = BufferGetPage(stack->buffer);
Page page = BufferGetPage(stack->buffer, NULL, NULL,
BGP_NO_SNAPSHOT_TEST);
Assert(!GinPageIsLeaf(page));
Assert(!GinPageIsData(page));
@@ -345,7 +346,8 @@ entryLocateEntry(GinBtree btree, GinBtreeStack *stack)
static bool
entryLocateLeafEntry(GinBtree btree, GinBtreeStack *stack)
{
Page page = BufferGetPage(stack->buffer);
Page page = BufferGetPage(stack->buffer, NULL, NULL,
BGP_NO_SNAPSHOT_TEST);
OffsetNumber low,
high;
@@ -461,7 +463,7 @@ entryIsEnoughSpace(GinBtree btree, Buffer buf, OffsetNumber off,
{
Size releasedsz = 0;
Size addedsz;
Page page = BufferGetPage(buf);
Page page = BufferGetPage(buf, NULL, NULL, BGP_NO_SNAPSHOT_TEST);
Assert(insertData->entry);
Assert(!GinPageIsData(page));
@@ -525,7 +527,7 @@ entryPlaceToPage(GinBtree btree, Buffer buf, GinBtreeStack *stack,
Page *newlpage, Page *newrpage)
{
GinBtreeEntryInsertData *insertData = insertPayload;
Page page = BufferGetPage(buf);
Page page = BufferGetPage(buf, NULL, NULL, BGP_NO_SNAPSHOT_TEST);
OffsetNumber off = stack->off;
OffsetNumber placed;
@@ -592,8 +594,10 @@ entrySplitPage(GinBtree btree, Buffer origbuf,
char *ptr;
IndexTuple itup;
Page page;
Page lpage = PageGetTempPageCopy(BufferGetPage(origbuf));
Page rpage = PageGetTempPageCopy(BufferGetPage(origbuf));
Page lpage = PageGetTempPageCopy(BufferGetPage(origbuf, NULL, NULL,
BGP_NO_SNAPSHOT_TEST));
Page rpage = PageGetTempPageCopy(BufferGetPage(origbuf, NULL, NULL,
BGP_NO_SNAPSHOT_TEST));
Size pageSize = PageGetPageSize(lpage);
char tupstore[2 * BLCKSZ];
@@ -674,7 +678,7 @@ static void *
entryPrepareDownlink(GinBtree btree, Buffer lbuf)
{
GinBtreeEntryInsertData *insertData;
Page lpage = BufferGetPage(lbuf);
Page lpage = BufferGetPage(lbuf, NULL, NULL, BGP_NO_SNAPSHOT_TEST);
BlockNumber lblkno = BufferGetBlockNumber(lbuf);
IndexTuple itup;